package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
      //对前端传过来的数据进行加密
//       password = DigestUtils.md5DigestAsHex(password.getBytes());
      if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

  @Override
  public void save(EmployeeDTO employeeDTO) {

      System.out.println("当前线程的id"+Thread.currentThread().getId());

      //创建对象
   Employee employee = new Employee();

    //对属性进行拷贝
    BeanUtils.copyProperties(employeeDTO,employee);

    //设置账号的状态，1默认正常状态
    employee.setStatus(StatusConstant.ENABLE);

    //设置密码，默认123456
    //password有个属性，对象引用
    employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

//设置创建时间，修改时间
//    employee.setCreateTime(LocalDateTime.now());
//    employee.setUpdateTime(LocalDateTime.now());

 //设置当前记录创建人id和修改人id
    //TODO 后期需要改成当前用户登录
      employee.setCreateUser(10L);
      employee.setUpdateUser(10L);
employeeMapper.insert(employee);
  }
/*
分页查询
 */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
//开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

       Page<Employee>page= employeeMapper.pageQuery(employeePageQueryDTO);

       //获取总数
        long total = page.getTotal();
        //获取分页
        List<Employee> records = page.getResult();

        return new PageResult(
                total,records
        );
    }

    //启用禁用员工账号
    @Override
    public void startorstop(Integer status, Long id) {
       //根据id修改员工的状态
        //创建Employee对象，然后设置状态跟相应的id
//        Employee employee = new Employee();
//        employee.setStatus(status);
//        employee.setId(id);
        //调用mapper
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }

    //根据id查询员工信息
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("*****");
        return employee ;
    }
//修改员工信息

    public void Update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //获得修改时间
//        employee.setUpdateTime(LocalDateTime.now());
//        //获得修改的id
//        employee.setUpdateUser(BaseContext.getCurrentId());
         //传入对象
        employeeMapper.update(employee);
    }

}
